TheHitachi Simple Tech [re]drive gives portable external hard drives a green makeover. The 500-gigabyte unit uses a fraction of the energy of its peers, and automatically powers off and on with your computer. Its recyclable aluminum housing fitted with durable bamboo sides keeps the unit cool without the need for a noisy, energy-sucking fan. $84
LIGHT SHOW
The projectors at the office slurp plenty of power, so green up your PowerPoint oratory with the PhoneSuit MiLi Pro. The micro projector beams 640-by-480 images on the nearest wall and plays audio through the built-in speakers or through A/V inputs. Hook up the travel-sized gadget to your laptop or PDA.Less than $350
ECOTOY
Teach your kids about solar power through the proven strategy of trickery. The OWI Six-in-One Educational Solar Kit comes with a miniature solar panel that can power a toy airboat, windmill, puppy, car, and two types of airplanes. Try to keep Dad away. $13
GREENER GRASS
A gas-powered lawn mower puts off as much emissions in an hour as a car does over almost 200 miles, according to the Environmental Protection Agency. The Husqvarna Automower Solar Hybrid, the world’s only solar-powered robot lawn mower, eliminates those emissions with its battery-operated motor powered by the sun. And it does the work for you, backing away from obstacles, all guided by a thin perimeter wire. Now you might actually look forward to mowing season. $3,000
ONE-CLICK SAVINGS
Desktop computers remain on an average of 50 hours a week, yet we use them only a fraction of that time. But when you punch the Ecobutton, your machine goes into a deeper state of hibernation than standard sleep-idle mode, using up to 45 percent less energy. Touch any key, and the computer wakes up instantly. $25